Why has life expectancy changed significantly over the past century and life span has not?

Q: a. Suggest two possible reasons why iron Fe2+ must be incorporated into the heme group, rather than…

A: According to the answering guidelines, I'm going to answer only first three parts puff the question.…

Q: 4.Can you curl your tongue up on the sides? Tongue-curling in humans is a dominant genetic trait.…

A: A genotypes is defined as an individual's genetic features or characteristics. A phenotype is an…

Q: . This hormone’s activity counters many of the growth-promoting effects of other hormones. A.…

A: Introduction:- Auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid are the five families…

Q: Why should a young culture be used in gram staining rather than an old culture? b. Why is it…

A: To answer this question first, we need to understand what is gram staining and what are the steps of…

Q: a. List two compounds that can be produced from pyruvate in skeletal muscle

A: The two compounds that can be formed from pyruvate in skeletal muscle are mentioned as follows:…

Q: Question 14 Which of the following is an example of a homologous structure? O the jointed leg of an…

A: There are 2 types of structures which serve important basis for the evolutionary evidences.…

Q: What vessels carry deoxygenated blood away from the heart? A. Pulmonary artery only B. Coronary…

A: Veins carry deoxygenated blood to the heart and located close to the skin. Arteries carry oxygen…

Q: Consider Cyclic Crossover on two Parent chromosomes: Parent1 = A0846172593B and Parent2 =…

A: The child chromosome will be... chromosome no 1 is... A94B5721608A chromosome no 2 is...…

Q: Define molecular fidelity.

A: Introduction Amino acids are the building blocks of proteins. The building blocks of life are amino…

Q: What diseases are associated with lysosomes? O Familial Hypercholesterolemia and Infectious diseases…

A: Lysosomal storage disease is the type of disease in which offspring receives the defective gene from…

Q: Which white blood cells participate in innate defenses?

A: INTRODUCTION Innate immunity :This is the first defence mechanism against the invading pathogen.

Q: 46 46 9:41 ON docs.google.com. + 24 Investigation: Drosophil. TVOtes. 4. Mate the offspring of this…

A: Introduction Drosophila melanogaster is a fly species belonging to the Drosophilidae family. The…

Q: What are the three reasons given why aging can’t be modulated?

A: Introduction :- Aging is the process by which an organism changes over time, increasing the risk of…

Q: d. Explain why ketone bodies are formed in diabetes mellitus.

A: Benedict's test is used to detect sugar in the urine. Eight drops of urine are added to five…

Q: What are the disorders that affect the immune system?

A: In Majority of case, the excessive immune response or autoimmune attack results into immune…

Q: Assess the advantages and disadvantages of recombinant protein subunit influenza vaccines.

A: Recombinant protein subunit influenza vaccines- Advantages- 1. They contain small amounts of virus…

Q: Which functional groups of amino acids are involved in the formation of a peptide bond? O The…

A: Amino acids are chemical molecules that combine to make proteins, hence, they are referred to as…

Q: be used for a restriction fragment length polymorphism (RFLP) diagnostic assay to identify…

A: Polymerase chain reaction, or  as we say PCR, is a technique used to make many copies of a specific…

Q: The equation for photosynthesis can be written as C6H12O6 + 602->6CO₂ + 6H₂O. How many oxygen atoms…

A: Introduction Plants and other creatures use photosynthesis to convert light energy into chemical…

Q: 1. List and describe 4 examples of barrier defenses.

A: Introduction  Natural barriers and the immune system protect the body against infection-causing…

Q: 10. Describe the roles and functions of the neuroendocrine system.

A: Introduction:- The body's various systems include:  The circulatory system System endocrine System…

Q: Metabolic rate is define as the rate of oxidation O true false

A: An organism's metabolic rate is the amount of energy expended in a given time period, which really…

Q: Assessment criteria 1.1 Q1. (a) ABO blood groups in human are an example of discontinuous variation,…

A: Variation is defined as difference between organisms of same species.  This changes occur due to…

Q: stapedia is a lethal allele that is o dominant. Individuals with this it must be heterozygous (Aa)…

A: A lethal gene usually in homozygous conditions may prevent development hence cause the death of an…

Q: 28. Analyze the graph of the growth curve representing the human population of Ireland before 1900…

A: With human activities it has always been observed that there is some disturbances in the life of…

Q: 7. Of the millions of antigen receptors, how many types would be found on a single B or T cell?

A: Answer : B and T cells are mainly the cells used in the immune system of the body.  They are…

Q: 2. How many loci are required by the FBI to positively identify an individual? Is it reasonably…

A: The accepted number of loci by Federal Bereau of Investigation is 13 which serves as standard of…

Q: Assess the advantages and disadvantages of egg-based influenza vaccines.

A: Mainly there are three different influenza vaccine production technologies approved by the US food…

Q: If the p-value found in an experiment is 0.85. We reject the null hypothesis. O True False

A: Introduction Hypothesis testing is applied when inferences about the population must be established…

Q: Give the balance between all. Equations of photosynthesis.....

A: Introduction Photosynthesis is the process of transforming energy from the sun into light, which is…

Q: Draw the insect inside the damaged host Pest: Army Worm/ Cutworm     Scientific…

A:

Q: 536 Chapter 9. Molecular endocrinology smells of acetone. Explain what needs to be done to determine…

A: Starvation is very much similar to the diabetes mellitus because the symptoms are nearly same the…

Q: activity? Describe a chiasma. When are they formed? What is the end result of the formation of…

A: The indirect process of cell division in which the chromosome of parent cells divide once but…

Q: For each embryonic tissue type, write one organ or differentiated cell type that is derived from…

A: Introduction:- The endoderm (inner layer), ectoderm (outer layer), and mesoderm (middle layer) are…

Q: 3.In man, assume that spotted skin (S) is dominant over non-spotted skin (s) and that wooly hair (W)…

A: We will use punette square to know the genotype and phenotype. First make a cross for the genotype…

Q: answer the following question in paragraph form at least five sentences. 1. Differentiate intrinsic…

A: Homeostasis, as currently defined, is a self-regulating process by which biological systems maintain…

Q: Bluebirds are songbirds that, like wood cavities in trees. European house sparrows, which have been…

A: A population has restricted assets and resources for a particular number of animal varieties. This…

Q: Design a strategy to make a subtracted -complete cDNA library from liver cells.  Use a flowchart…

A: cDNA is also known as complementary or copy-DNA and is synthesised using mRNA as a template and the…

Q: Always give eye drops only for acute loss of vision .A true .B

A: Most of the eye drops are used for  keeping the eyes moist.  Moist eyes in comparison to dry eyes…

Q: Why is it desirable that most cultures be inspected after 15 to 18 hours of incubation?

A: Introduction Microbial culture is a microbiological technique that involves actively multiplying…

Q: Draw the insect inside the damaged host

A: Armyworm Armyworm or the cutworm is the most common pest found in the corn or maize plants. They…

Q: Destroying forests increases the carbon in the atmosphere. True False

A: Introduction The removal of a forest or stand of trees from land that is then changed to non-forest…

Q: Which of the following statements is FALSE? Select one: a. G-C bonds are much more resistant to…

A: DNA and RNA show our genetic constitution.

Q: Compounds found in food that the body cannot manufacture O Proteins and fats Carbohydrates and water…

A: Q. Compounds found in food that the body cannot manufacture   Q. bacillus incubation period of 4-12…

Q: 11. What happens when B cells proliferate in response to signaling from a helper T cell?

A: We know that B cells synthesize and secrete antibodies whereas T-cells do not make antibodies .…

Q: Which two cytoskeletal components are most intimately associated with muscle movement? Actin and…

A:

Q: Part 3: Sex Linked Traits 1. Cross a white eyed male with a wild-type female. What are the…

A: Introduction Drosophila melanogaster is a fly species belonging to the Drosophilidae family. The…

Q: A. The two rabbits with these corresponding genotypes were mated; CCch X CCh . Do the cross and…

A: "Genotype" refers to an organism's complete genetic information. The observed qualities of an…

Q: Compare and contrast the Gram-positive and Gram-negative bacterial cell walls. Discuss the cell wall…

A: Gram-positive bacteria have extensive coatings of peptidoglycan in their cell walls. Gram-negative…

Q: Why should culture media after inoculation be incubated at an optimal temperature immediately?

A: Culture media, also called as growth media, are particular combinations of nutrients and other…